Colcha
Oruro department, 40 km north-east of Huanuni, Bolivia
Other hydrothermalSn-Ag
- Type
- Quartz-cassiterite veins in Palaeozoic pelites
Magmatic-hydrothermal deposit of the Bolivian tin belt (Eastern Cordillera). Above an inferred tin-bearing granite cupola, 25 km north-east of the Morococala volcanic complex. Indicative coordinates. Position read on the location map of Hirsh et al. (2026).
δ124Sn in ‰ (per mil) Values of the same system
Standard : NIST SRM 3161a
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.8 ± 0.61 ‰ | 0.07 / 1.47 ‰ | 5 | cassiterite Mean and standard deviation recalculated from 5 samples, Table 1. | Hirsh et al. (2026), Province-scale tin and zinc stable isotope fractionation trends in t… |
δ66Zn in ‰ (per mil) Values of the same system
Standard : JMC 3-0749L
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.89 ‰ | 1 | sphalerite (later than cassiterite) One analysis, Table 1. Asterisked samples contain minor other phases. | Hirsh et al. (2026), Province-scale tin and zinc stable isotope fractionation trends in t… |
Deposits of the same type
- Huanuni Bolivia
- Monserrat Bolivia
- Poopó Bolivia
- El Salvador Bolivia
- Colquiri Bolivia
- Chicote Bolivia
- Sayaquira Bolivia
- Viloco (Araca) Bolivia
Cite this page
IsoFind Atlas (2026). Colcha, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/colcha/ (accessed 2026-10-13).
@misc{isofind2026colchaisotopesignatures,
title = {Colcha, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/colcha/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13